Patent US3839343A successfully refreshed from Google Patents.
US3839343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Symmetrical polyfluoroisoalkoxyalkyl quaternary ammonium sulfates
Assignee: Honeywell International Inc
•
Filing: 1969-11-10
•
Granted: 1974-10-01
•
Expires: 1989-11-10
Abstract
Abstract 1. A COMPOUND OF THE FORMULA (F3C-CF(-CF3)-O-(CF2)S-(CH2)T-Q)(+) (-)O-SO2-O-(CH2)T- (CF2)S-O-CF(-CF3)2 WHEREIN Q IS A QUANTERNARY AMMONIUM RADICAL AND S AND T ARE INTEGERS FROM 1 TO 10.
Inventors
- 👤 L Anello
- 👤 R Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D215/00; C07D215/02; C07D215/04; C07D215/10; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |